Failed to get path to ssapi.dll

Hello all. I am currently in the process of setting up TeamCity at our company, but I can't get it to work with VSS. Current configuration:

• TeamCity 4.0.2 (8222)
• One local/default build agent
• Visual Source Safe 2005
• SQL Server 2005

All on the same machine. I run TC as a Windows Service under a domain account with administrative privileges. I set up one project with one build configuration:

• VCS Checkout mode: Automatically on the server
• Checkout directory: <empty>
• No labeling
• Correct path to the srcsafe.ini file
• Correct username/password
• Checkout options: Perform full checkout on every build
• No automatic triggers are configured

When I press the "Test Connection" button in the Edit VCS Root screen it says: Connection successful! However, when I start a build (manually, by pressing the Run button) the build fails with the following error:

Could not get project sources: for build #20
jetbrains.buildServer.vcs.VcsException: Getting sources for checkout rule '.=>.' failed with erorr: VSS execution error: Failed to get path to ssapi.dll


SourceSafe is installed correctly. I installed an older version of "vss-support.jar" and then it works! That is, I don't get the "Failed to get path to ssapi.dll" error, but that older version gives me other problems that are also mentioned in other threads (i.e. not all source files are retrieved from VSS). So, I would rather use the updated version of vss-support/TC-VSS-Native.exe, because this seems to be the only version that has the "Perform full checkout on every build" option.

So, what am I missing here? Why can't it find the path to ssapi.dll? I attached the VCS log..

Thanks in advance for any help,
Rogier